What Info to Share?

Kat
So I'm in a happy healthy relationship with my man, he has a 5 year old son from a previous relationship. The mother of his son and I have had minor problems that have come up throughout the relationship - not a big deal mostly just petty comments. Anyway, recently she has demanded to know where I live - her reasoning is that her son will occasionally come to my home and has spent the night a couple of times - and she wants to know where he is. 
Now normally I wouldn't have a problem but my boyfriend recently showed me a message that she sent to him - it was less than pleasant. 
Essentially threatening to have her boyfriend (whom is a police officer) run my name so she could find out where I live, what I drive, blah blah blah. Amongst slandering - which we don't know each other, we've had minimal contact. For me this is a red flag and now I've asked to have a sit down meeting to discuss guidelines about me giving her my address (like no showing up unannounced) basics. To which she replied she doesn't have to justify her basic parental rights to know where her son is... Am I being unreasonable? I'm incredibly stressed out over this because now she's threatening to take my boyfriend (her ex) to court over me not giving my address... Input would be helpful.